title: Passive smoking is major threat.
authors.forename: R
authors.initials: R
authors.lastname: Watson
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006801:Humans; D008875:Middle Aged; D014028:Tobacco Smoke Pollution / Q000009:adverse effects*
chemical_list: D014028:Tobacco Smoke Pollution